A. It increased the students’ white blood cell count. B. It increased some students’ energy level. C. It released a natural painkiller in some students’ bodies. D. It improved the students’ ability to play musical instruments.
A. It increased the students’ white blood cell count.
B. It increased some students’ energy level.
C. It released a natural painkiller in some students’ bodies.
D. It improved the students’ ability to play musical instruments.